At Technology Review’s EmTech conference last week, MIT professor Joel Schindall told the audience at a panel on energy storage why ultracapacitors may have a significant role to play in our ...

Energy storage company Ioxus designs a hybrid gadget that combines the fast recharge of ultracapacitors with the greater energy storage of lithium-ion batteries. Martin LaMonica is a senior writer ...

Effenco, a Canada-based specialist in electric propulsion systems for heavy-duty vocational vehicles, announced an ultracapacitor-based energy storage system for 100% electric trucks. The company was ...

Chemical batteries power many different mobile electronic devices, but repeated charging and discharging cycles can wear them out. An alternative energy storage device called an ultracapacitor can be ...

Tesla is integrating Maxwell’s ultracapacitor business months after the acquisition, several employees confirmed, but it’s unclear if it’s only to comply with existing contracts or if they plan to ...

The ultracapacitor, on the other hand, only adds about 10 kg, resulting in a total bike weight of just 150 kg (330 lb) for the Racer. And Grape tells us that in an application like this, it's a ...

Municipal transit agencies have tried to reduce the carbon footprint of their bus fleets using a range of options over the years, from biofuels and hydrogen to batteries and hybrid-electric diesel.

An MIT spinoff just getting off the ground received a huge helping hand from the U.S. Department of Energy on Monday. FastCAP Systems, of Cambridge, MA, received a two-and-a-half-year, $5.35 million ...

Scientists have designed an ultracapacitor that maintains a near steady voltage. The novel constant-voltage design may one day help ultracapacitors find new uses in low-voltage electric vehicle ...